The LightCore UL 3.1R Large offers exceptional thermal performance and durability for the ultralight outdoor enthusiasts. With foil insulation, it provides an impressive warmth-to-weight ratio, making it ideal for three-season use. Its ultra-lightweight construction ensures easy portability, while the intelligent horizontal baffle design adapts to your body, delivering reliable support. Equipped with the innovative Robens Peak Valve, this mat features one-way technology that enhances airflow for quick inflation and deflation. The lightweight nylon outer is soft against the skin, adding to user comfort. Supplied with a carry bag and pumpsack for convenience, this PFAS-free product is designed to support your outdoor experiences without compromising on quality.